Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 36243 

(e) Unsafe Condition 

This AD was prompted by a report of 

cracks on the M/R scissor link. The FAA is 

issuing this AD to replace the metal bushings 

installed on the M/R swashplate guide 

bellcrank with plastic bushings. The unsafe 

condition, if not addressed, could result in 

failure of the M/R swashplate guide bellcrank 

and reduced control of the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Within 50 hours time-in-service (TIS) or 

2 months, whichever occurs first after the 

effective date of this AD: 

(i) Disconnect the bellcrank from the 

swashplate guide by removing each bolt and, 

ensuring that the bellcrank remains attached 

to the flight control rod, remove each metal 

bushing from service using a bushing 

disassembly tool. 

(ii) Visually inspect the lug bore area for 

any corrosion and any cracks. If there is any 

corrosion or any cracks, before further flight, 

remove the swashplate guide from service or 

repair it using an FAA-approved method. If 

there is no corrosion and no cracks, install 

plastic bushing part number HG22–1001, 

coat plastic bushing with isolation 

compound, re-install the bellcrank, torque 

each bolt to 7.5 Nm–9 Nm (5.5 ft-lbs–6.6 ftlbs), and install cotter pins. 

(2) As of the effective date of this AD, do 

not install any metal bushing on any 

helicopter. 

(h) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (i)(1) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(i) Related Information 

(1) For more information about this AD, 

contact Andrea Jimenez, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 Stewart 

Ave., Westbury, NY 11590; telephone (516) 

228–7330; email andrea.jimenez@faa.gov. 

(2) Guimbal Service Bulletin SB 17–003, 

Revision C, dated July 12, 2019, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact He ́licopte`res Guimbal, Basile 

Ginel, 1070, rue du Lieutenant Parayre, 

Ae ́rodrome d’Aix-en-Provence, 13290 Les 

Milles, France; telephone 33–04–42–39–10– 

88; email basile.ginel@guimbal.com; web 

https://www.guimbal.com. You may view 

this referenced service information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(3) The subject of this AD is addressed in 

European Union Aviation Safety Agency 

(EASA) AD 2019–0185, dated July 30, 2019. 

You may view the EASA AD on the internet 

at https://www.regulations.gov in Docket No. 

FAA–2021–0498. 

Issued on June 10, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–14495 Filed 7–8–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0560; Project 

Identifier MCAI–2021–00192–T] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bombardier, Inc., Model BD– 

700–1A10 and BD–700–1A11 airplanes. 

This proposed AD was prompted by 

reports that the sliding bushings in the 

forward engine mount system were 

missing. This proposed AD would 

require an inspection (gap check) of the 

front and aft engine mounts to verify the 

proper installation of the sliding 

bushings, and repair if necessary. The 

FAA is proposing this AD to address the 

unsafe condition on these products. 

DATES: The FAA must receive comments 

on this proposed AD by August 23, 

2021. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

https://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE, Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this NPRM, contact Bombardier, Inc., 

400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; email 

thd.crj@aero.bombardier.com; internet 

https://www.bombardier.com. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0560; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

NPRM, any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Siddeeq Bacchus, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7362; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0560; Project Identifier 

MCAI–2021–00192–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend the proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this NPRM. 


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36244 Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Siddeeq Bacchus, 

Aerospace Engineer, Mechanical 

Systems and Administrative Services 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7362; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Background 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2021–04, dated February 15, 2021 (also 

referred to after this as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for certain Bombardier, Inc., 

Model BD–700–1A10 and BD–700– 

1A11 airplanes. You may examine the 

MCAI in the AD docket at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0560. 

This proposed AD was prompted by 

reports that the sliding bushings in the 

forward engine mount system were 

missing. The FAA is proposing this AD 

to address redistribution of load/stress 

on the mount components, which may 

decrease the component fatigue life; 

failure of the mount structural 

components could result in the loss of 

the engine attachment to the airframe. 

See the MCAI for additional background 

information. 

Related Service Information Under 1 

CFR Part 51 

Bombardier, Inc., has issued the 

following service information. 

• Bombardier Service Bulletin 700– 

1A11–71–005, dated December 14, 

2020. 

• Bombardier Service Bulletin 700– 

71–005, dated December 14, 2020. 

• Bombardier Service Bulletin 700– 

71–5005, dated December 14, 2020. 

• Bombardier Service Bulletin 700– 

71–5501, dated December 14, 2020. 

• Bombardier Service Bulletin 700– 

71–6005, December 14, 2020. 

• Bombardier Service Bulletin 700– 

71–6501, December 14, 2020. 

This service information describes 

procedures for verifying the proper 

installation of the sliding bushings by 

doing an inspection (gap check), 

including a gap outside acceptable 

limits, a missing or damaged nut or bolt 

at the upper side of front mount beam, 

and a bolt that turns freely with finger 

pressure. These documents are distinct 

since they apply to different airplane 

serial numbers. This service information 

is reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in the 

ADDRESSES section. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the MCAI and service 

information referenced above. The FAA 

is proposing this AD because the FAA 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the service information already 

described. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 376 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

11 work-hours × $85 per hour = $935 ........................................................................................ $0 $935 $351,560 

The FAA has received no definitive 

data on which to base the cost estimates 

for the repairs specified in this proposed 

AD. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

of the costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

The FAA determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

national Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 


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Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 36245 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Bombardier, Inc.: Docket No. FAA–2021– 

0560; Project Identifier MCAI–2021– 

00192–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by August 23, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

Model BD–700–1A10 and BD–700–1A11 

airplanes, certificated in any category, serial 

numbers 9002 through 9879 inclusive, 9998, 

60001 through 60005 inclusive, 60007, 

60009, 60015, 60016, and 60024. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 71, Powerplant. 

(e) Unsafe Condition 

This AD was prompted by reports that the 

sliding bushings in the forward engine mount 

system were missing. The FAA is issuing this 

AD to address redistribution of load/stress on 

the mount components, which may decrease 

the component fatigue life; failure of the 

mount structural components could result in 

the loss of the engine attachment to the 

airframe. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Action 

Within 15 months or 750 flight hours, 

whichever occurs first, after the effective date 

of this AD: Verify the proper installation of 

the sliding bushings by doing an inspection 

(gap check) for discrepancies of the front and 

aft engine mounts, in accordance with 

paragraphs 2.B. through 2.F. of the 

Accomplishment Instructions of the 

applicable service information specified in 

figure 1 to paragraph (g) of this AD. If any 

discrepancy is found: Before further flight, 

repair using a method approved by the 

Manager, New York ACO Branch, FAA; or 

Transport Canada Civil Aviation (TCCA); or 

Bombardier, Inc.’s TCCA Design Approval 

Organization (DAO). If approved by the DAO, 

the approval must include the DAOauthorized signature. Where a serial number 

is identified in more than one row in figure 

1 to paragraph (g) of this AD, the applicable 

service information is identified based on the 

marketing designations in paragraph 1.M., 

‘‘Equivalent Service Bulletins,’’ of each 

service information. 

BILLING CODE 4910–13–P 

BILLING CODE 4910–13–C 


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Figure 1 to paragraph (g) - Service Information 

Serial Number- Model- Bombardier Service Bulletin9002 to 9312 inclusive, 9314 to BD-700-lAl0 700-71-005, dated December 14, 9380 inclusive, and 9384 to airplanes 2020 9429 inclusive 

9313, 9381, 9432 to 9860 

inclusive, 9863 to 9871 BD-700-lAl0 700-71-6005, December 14, 

inclusive, 9873 to 9879 airplanes 2020 

inclusive, 60005 and 60024 

9861, 9872, 60001 to 60004 BD-700-lAl0 700-71-6501, December 14, 

inclusive, 60009, and 60016 airplanes 2020 

9127 to 9383 inclusive, 9389 to BD-700-lAll 700-lAl l-71-005, dated 9400 inclusive, 9404 to airplanes December 14, 2020 943 linclusive, and 9998 

9386, 9401, 9445 to 9862 BD-700-lAl 1 700-71-5005, dated December inclusive, and 9868 to 9879 

inclusive airplanes 14,2020 

60007 and 60015 BD-700-lAl 1 700-71-5501, dated December 

airplanes 14,2020 
36246 Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 

1Although these provisions of the U.S. Code are 

customarily referred to collectively as the ‘‘Private 

Express Statutes,’’ they do not all relate to private 

expresses or prohibit carriage of letters out of the 

mails. 

2See Postal Accountability and Enhancement 

Act, Public Law 109–435, 120 Stat. 3198 (2006); see 

also 39 CFR 310, 320 (2005). 

3See H.R. Rep. No. 109–66, 109th Cong., 1st 

Sess., pt. 1, at 58 (2005) (H.R. Rep. No. 109–66). 

(h) No Reporting Requirement 

Although the service information 

identified in table 1 to paragraph (g) of this 

AD specifies to submit certain information to 

the manufacturer, this AD does not include 

that requirement. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. Before 

using any approved AMOC, notify your 

appropriate principal inspector, or lacking a 

principal inspector, the manager of the 

responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, New York ACO Branch, 

FAA; or TCCA; or Bombardier, Inc.’s TCCA 

DAO. If approved by the DAO, the approval 

must include the DAO-authorized signature. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2021–04, dated February 15, 2021; for 

related information. This MCAI may be 

found in the AD docket on the internet at 

https://www.regulations.gov by searching for 

and locating Docket No. FAA–2021–0560. 

(2) For more information about this AD, 

contact Siddeeq Bacchus, Aerospace 

Engineer, Mechanical Systems and 

Administrative Services Section, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7362; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 514–855–5000; fax 514– 

855–7401; email thd.crj@

aero.bombardier.com; internet https://

www.bombardier.com. You may view this 

service information at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

Issued on July 2, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–14611 Filed 7–8–21; 8:45 am] 

BILLING CODE 4910–13–P 

POSTAL REGULATORY COMMISSION 

39 CFR Chapter III 

[Docket No. PI2021–2; Order No. 5930] 

Public Inquiry 

AGENCY: Postal Regulatory Commission. 

ACTION: Advanced notice of proposed 

rulemaking. 

SUMMARY: The Commission seeks further 

input from the public about what 

regulations promulgated by the 

Commission may be necessary to carry 

out the requirements of agency law. 

This document informs the public of 

this proceeding, invites public 

comment, and takes other 

administrative steps. 

DATES: Comments are due: August 26, 

2021. 

ADDRESSES: Submit comments 

electronically via the Commission’s 

Filing Online system at http://

www.prc.gov. Those who cannot submit 

comments electronically should contact 

the person identified in the FOR FURTHER

INFORMATION CONTACT section by 

telephone for advice on filing 

alternatives. 

FOR FURTHER INFORMATION CONTACT: 

David A. Trissell, General Counsel, at 

202–789–6820. 

SUPPLEMENTARY INFORMATION: 

Table of Contents 

I. Introduction 

II. Background 

III. Discussion 

IV. Comments 

V. Ordering Paragraphs 

I. Introduction 

In this docket, the Commission seeks 

further input from the public about 

what regulations promulgated by the 

Commission may be necessary to carry 

out the requirements of 39 U.S.C. 601. 

Section 601 describes instances when 

letters may be carried out of the mail, 

or when the letter monopoly does not 

apply to a mailpiece. In particular, the 

Commission seeks to determine whether 

regulations promulgated by the 

Commission are needed to carry out 

those statutory exemptions. 

II. Background 

The Postal Service has exclusive 

rights in the carriage and delivery of 

letters under certain circumstances. 

This letter monopoly is codified in the 

Private Express Statutes (PES), which 

are a group of civil and criminal statutes 

that make it unlawful for any entity 

other than the Postal Service to send or 

carry letters. See 18 U.S.C. 1693–1699; 

39 U.S.C. 601–606.1

Section 601 provides specific 

instances (exceptions) where letters may 

be carried out of the mail (i.e., not 

subject to the letter monopoly). Section 

601(a) sets forth the conditions under 

which a letter may be carried out of the 

mail, which include requiring that the 

letter be enclosed in an envelope, that 

the proper amount of postage is affixed 

to the envelope, and that the postage is 

canceled. 39 U.S.C. 601(a). 

Section 601(b) provides additional 

exceptions such that the letter 

monopoly does not apply to letters 

charged more than six times the current 

rate for the first ounce of a Single-Piece 

First Class Letter or to letters weighing 

more than 12.5 ounces. See 39 U.S.C. 

601(b)(1), (b)(2). The ‘‘grandfather 

clause’’ in Section 601(b)(3) references 

exceptions from prior Postal Service 

regulations that permitted private 

carriage as in effect on July 1, 2005. 39 

U.S.C. 601(b)(3); see also 39 CFR 310.1 

and 39 CFR 320.2–320.8 (2005). 

Section 601(c), which is the subject of 

this proceeding, directs the Commission 

(rather than the Postal Service) to 

promulgate any regulations necessary to 

carry out this section. 39 U.S.C. 601(c). 

This Public Inquiry seeks to answer how 

the Commission shall meet this 

statutory requirement. 

Prior to the Postal Accountability and 

Enhancement Act (PAEA) of 2006, the 

Postal Service issued regulations that 

purported to suspend the PES.2 The 

PAEA included the term ‘‘purport’’ to 

describe the Postal Service’s efforts to 

suspend the PES, reflecting some 

disagreement between the Postal Service 

and policymakers about the Postal 

Service’s authority to promulgate such 

regulations prior to the PAEA.3 PostPAEA, the law clearly cedes such 

authority to the Commission. These 

regulations defined the term ‘‘letter’’ as 

‘‘a message directed to a specific person 

or address and recorded in or on a 

tangible object,’’ subject to several 

provisions. 39 CFR 310.1(a) (2005). The 

regulations also described several 

statutory exceptions to the letter 

monopoly, such as when the letter 

accompanies and relates to cargo or 

when a special messenger is used. See 

39 CFR 310.3 (2005). In addition, the 


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